Asahel -cooley



UNITED STAVIiES PATEN T GFLFICE.

ASAHEL VCOOLEY, OF SPRINGFIELD, ILLINOIS.

PUMP.

Specifica-tion of Letters Patent No. 22,165, dated November 30, 1858.

To all whom it may concern:

Be it known that I, A-sAI-IEL Cocinar, of Springfield, in the county of Sangamon and State of Illinois, have invented a new and 'useful Improvement in Double-Acting Suc- A is the suction chamber; B B the cvlinder; C C the air chamber; D D the discharge pipe; E E the piston; F F its upper valve; G G its lower valve; II H working lever; I I rin-g around the discharge pipe; K K pitmen for connecting the lever to the ring; and, L a transverse section of the pitmen.

To enable others skilled inthe art to make and use my invention, I will proceed to describe its construction and operation.

Construction-The suction chamber, consists o-f a hemispherical chamber, with pipes extending downward fro-m ports a a, and a port below for receiving the liquid from the supply pipe. The form of the cylinder is readily understood by the drawings.

The air chamber, is a spherical chamber with a pipe extending downward through the center, to receive the liquid from the bottom.

The piston is a circular disk, with a circular opening through the center; and has two valves F and Gr which alternately close the openings to form vacuums in the cylinder above and below the piston. Valve F is hemispheroid, funnel shape, or of any convenient form, and has a hole through the top, for discharging the liquid into the discharge pipe, to which it is attached. This valve is attached to bolt s, by wings c c c or their equivalent. F, c o c, and s, is one piece, the bolt and wings of which pass through the opening of the piston and the bolt extends below the wings, and is attached to valve G below the piston. The length of the wings below the lower rim of valve F, being greater than the thickness of the piston at the opening, allows space for wor-king the valves.

rIhe packing of the piston, consists of a strip of leather or other suitable material, placed around Vthe circumference of the :piston, and secured with a wire, which binds the center of the strip into a groove.

A reciprocating motion is communicated `to the piston, by p'itmen K K" which attach the working lever, to ring I, which is secured to the discharge pipe with a set screw.

e c (F ig. 4) are cross sections of the eX- tremit-ies z' z' of the -pitmen They are circular Vin shape, having two points extending from opposite sides, on lines z' i', z' z', which hold the pitmen in their proper position. The holes for the reception of `the pitmen, are of the same form as the cross sections e e, having two slots on opposite sides on lines x m, for receiving the poi-nts of the pitmen.

When the ends of the pitmen are so placed that lines z', z', vcoincide with lines af, they may be passed through the holes, to the opposite sides, where recesses are formed, the diameter of which is equal to the extremity of the points, on line 'z' z', and of sufiicient depth to allow the points to :turn in the recesses. When the pitmen are placed in the holes, and turned so that lines z' z', are perpendicular to lines they are in their working position, and can vibrate freely when the pump is worked and the points working in the recesses hold them in their places.

Materials. The materials of the pump are mostly iron. The handle of the lever is wood, valves F Gr, and their connections, valves d, stufling box g and a section of pipe working through the stuffing boX and connecting with valve F are generally brass.

Operation-As the lever rises valve Gr is drawn against the piston forcing it upward, valve is raised, and the cylinder is filled below the piston. When the stroke of the piston is reversed, valve Z) closes the corresponding port; valve F presses the piston downward; valve E drops below the piston; and the liquid is forced through the intervening space; between wings c c c, through valve F, air chamber, and discharge pipe. As the piston descends, and the liquid discharges, as above described, the space between valve F and the piston being closed, the valve Z is raised, and the liquid flows through passage f and lls the cylinder IIC above the piston. Then the stroke is again reversed, the cylinder is again lilled below the piston; valve d drops; valve F is raised above the piston; Iand the liquid is forced through the intervening space; valve F; and discharged. Then the piston is raised to its highest point, valve F fills the recess above, and its lower rim being even with the top of the cylinder, the air (should there be any in the cylinder above the piston) escapes into the air chamber. Should there he any air below the piston, it escapes before the water is discharged from the cylinder. Then the pump is filled, and remaining at rest, the upper surface of the liquid in the suction chamber, is at the lower ends of the pipes extending from ports a a; but when it is working, and either of valves b, d, drops, the liquid continues flowing into the chamber, until the other valve rises, when it flows into the cylinder, faster than it fiows in the chamber, until its surface is again even with the ends of the pipes. A vibration of the liquid in the chamber continues, as ports a a, are alternately opened, and closed, while an unbroken current flows from the supply pipe, avoiding a reaction, or iiowing back, of the liquid in the supply pipe by the closing of the ports.

Advantages-#The advantages oit the pump are, lst, its capacity for discharging the air from the cylinder; 2nd, an unbroken current from the supply pipe; 3rd, a direct water course, the water that discharges from above the piston, having but aslight change of direction, while that from below the piston, passes in a straight line from the bottom to the top of the well, and, 4th, it dispenses with a piston rod for working it in deep wells, the pipe working in its stead, being lighter than a piston rod of the strength required.

By avoiding an accumulation of air in the cylinder, the pump discharges more with a given rate oi' speed; it draws by atmospheric pressure with more promptness; and this, with an unchecked current Jfrom the supply pipe, enables it to draw from a much greater distance; and with a continuous current from the supply pipe, :and directpassage through the cylinder, it is worked with much less power.

Having thus described the construction and operation of my improvement, and enough of the remainder of the pump, to show the nature and utility of said improvement, I disclaim suction chamber A; cylinder B; and air chamber C, as they do not differ materially from others in use.

Iv claim- 1. The parts E, G, F, s, and 0, 0, c, composing the piston and its valves when combined with the hollow piston rod D, substantially as above described.

2. I claim the parts H, K, and I, constructed as above described when combined with the hollow piston rod D, for the purposes and in the manner above described.

I ASAHEL COOLEY.

S. H. SCHUYLER, J. C. SCHUYLER. 

